Perhaps you should try some spelling variations:
"data tracking algorithm" » "data tracking algorithms" (Expand Search), "data training algorithms" (Expand Search), "data making algorithm" (Expand Search), "path tracking algorithm" (Expand Search), "data backing algorithm" (Expand Search), "uav tracking algorithm" (Expand Search)
"element tree algorithms" » "element three algorithms" (Expand Search), "element art algorithms" (Expand Search), "element two algorithms" (Expand Search), "element ree algorithms" (Expand Search), "element te algorithms" (Expand Search), "element ore algorithms" (Expand Search)
"present data algorithm" » "present data algorithms" (Expand Search), "present update algorithm" (Expand Search), "present atlas algorithm" (Expand Search), "presence data algorithm" (Expand Search), "present day algorithm" (Expand Search), "recent data algorithm" (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("element tree algorithms") OR ("present data algorithm"))) OR ("data tracking algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element tree algorithms\") OR (\"present data algorithm\"))) OR (\"data tracking algorithm\"))".
• Removing quotes may allow a broader search: (((( element tree algorithms ) OR ( present data algorithm ))) OR ( data tracking algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element tree algorithms") OR ("present data algorithm"))) OR ("data tracking algorithm"))*.